What are the similes and metaphors found in Sylvia Plath's poem "You're"?

"You're" is rife with similes and metaphors as its purpose
is to compare the titular character to all of the things which remind Plath of him/her.
This poem is about an unborn child--a baby still in the womb--which helps to identify
the various comparisons Plath makes.

The first metaphor
appears in the first line--"Clownlike"--which she then supports with imagery by
suggesting that the character, like a clown, is most comfortable on his hands with feet
in the air. Plath is referencing the baby's position, head down and facing the birth
canal. She suggests the baby is "Gilled like a fish" because he/she is swathed in
amniotic fluid. Plath then compares the baby to a turnip, "Mute as a turnip from the
Fourth/Of July to All Fools' Day," which might imply the timing of the baby's birth or
might simply be a comparison to the fact that the baby won't speak or make itself much
known during that time.

She makes many comparisons in the
second verse to the baby as a compact, contained entity--"bent-backed Atlas," "traveled
prawn," "snug as a bug," and so forth. There is also, in this verse, the suggestion that
the child seems far off--in the distance in terms of time, or perhaps even slightly
emotionally, as something "vague" and "foggy" to her yet, but at the same time something
for which she is searching.

The reference to her "little
loaf" is taken straight from the colloquialism "bun in the oven" and there are multiple
food-based comparisons in the poem. Generally, in American slang, terms of endearment
are based on food, so this helps to indicate her affection for the
baby.